| /* |
| * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved. |
| * |
| * This software is available to you under a choice of one of two |
| * licenses. You may choose to be licensed under the terms of the GNU |
| * General Public License (GPL) Version 2, available from the file |
| * COPYING in the main directory of this source tree, or the |
| * BSD license below: |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials |
| * provided with the distribution. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| * |
| * Author: Upinder Malhi <umalhi@cisco.com> |
| * Author: Anant Deepak <anadeepa@cisco.com> |
| * Author: Cesare Cantu' <cantuc@cisco.com> |
| * Author: Jeff Squyres <jsquyres@cisco.com> |
| * Author: Kiran Thirumalai <kithirum@cisco.com> |
| * Author: Xuyang Wang <xuywang@cisco.com> |
| * Author: Reese Faucette <rfaucett@cisco.com> |
| * |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/inetdevice.h> |
| #include <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/errno.h> |
| #include <linux/pci.h> |
| #include <linux/netdevice.h> |
| |
| #include <rdma/ib_user_verbs.h> |
| #include <rdma/ib_addr.h> |
| |
| #include "usnic_abi.h" |
| #include "usnic_common_util.h" |
| #include "usnic_ib.h" |
| #include "usnic_ib_qp_grp.h" |
| #include "usnic_log.h" |
| #include "usnic_fwd.h" |
| #include "usnic_debugfs.h" |
| #include "usnic_ib_verbs.h" |
| #include "usnic_transport.h" |
| #include "usnic_uiom.h" |
| #include "usnic_ib_sysfs.h" |
| |
| unsigned int usnic_log_lvl = USNIC_LOG_LVL_ERR; |
| unsigned int usnic_ib_share_vf = 1; |
| |
| static const char usnic_version[] = |
| DRV_NAME ": Cisco VIC (USNIC) Verbs Driver v" |
| DRV_VERSION " (" DRV_RELDATE ")\n"; |
| |
| static DEFINE_MUTEX(usnic_ib_ibdev_list_lock); |
| static LIST_HEAD(usnic_ib_ibdev_list); |
| |
| /* Callback dump funcs */ |
| static int usnic_ib_dump_vf_hdr(void *obj, char *buf, int buf_sz) |
| { |
| struct usnic_ib_vf *vf = obj; |
| return scnprintf(buf, buf_sz, "PF: %s ", dev_name(&vf->pf->ib_dev.dev)); |
| } |
| /* End callback dump funcs */ |
| |
| static void usnic_ib_dump_vf(struct usnic_ib_vf *vf, char *buf, int buf_sz) |
| { |
| usnic_vnic_dump(vf->vnic, buf, buf_sz, vf, |
| usnic_ib_dump_vf_hdr, |
| usnic_ib_qp_grp_dump_hdr, usnic_ib_qp_grp_dump_rows); |
| } |
| |
| void usnic_ib_log_vf(struct usnic_ib_vf *vf) |
| { |
| char *buf = kzalloc(1000, GFP_KERNEL); |
| |
| if (!buf) |
| return; |
| |
| usnic_ib_dump_vf(vf, buf, 1000); |
| usnic_dbg("%s\n", buf); |
| |
| kfree(buf); |
| } |
| |
| /* Start of netdev section */ |
| static void usnic_ib_qp_grp_modify_active_to_err(struct usnic_ib_dev *us_ibdev) |
| { |
| struct usnic_ib_ucontext *ctx; |
| struct usnic_ib_qp_grp *qp_grp; |
| enum ib_qp_state cur_state; |
| int status; |
| |
| BUG_ON(!mutex_is_locked(&us_ibdev->usdev_lock)); |
| |
| list_for_each_entry(ctx, &us_ibdev->ctx_list, link) { |
| list_for_each_entry(qp_grp, &ctx->qp_grp_list, link) { |
| cur_state = qp_grp->state; |
| if (cur_state == IB_QPS_INIT || |
| cur_state == IB_QPS_RTR || |
| cur_state == IB_QPS_RTS) { |
| status = usnic_ib_qp_grp_modify(qp_grp, |
| IB_QPS_ERR, |
| NULL); |
| if (status) { |
| usnic_err("Failed to transition qp grp %u from %s to %s\n", |
| qp_grp->grp_id, |
| usnic_ib_qp_grp_state_to_string |
| (cur_state), |
| usnic_ib_qp_grp_state_to_string |
| (IB_QPS_ERR)); |
| } |
| } |
| } |
| } |
| } |
| |
| static void usnic_ib_handle_usdev_event(struct usnic_ib_dev *us_ibdev, |
| unsigned long event) |
| { |
| struct net_device *netdev; |
| struct ib_event ib_event; |
| |
| memset(&ib_event, 0, sizeof(ib_event)); |
| |
| mutex_lock(&us_ibdev->usdev_lock); |
| netdev = us_ibdev->netdev; |
| switch (event) { |
| case NETDEV_REBOOT: |
| usnic_info("PF Reset on %s\n", dev_name(&us_ibdev->ib_dev.dev)); |
| usnic_ib_qp_grp_modify_active_to_err(us_ibdev); |
| ib_event.event = IB_EVENT_PORT_ERR; |
| ib_event.device = &us_ibdev->ib_dev; |
| ib_event.element.port_num = 1; |
| ib_dispatch_event(&ib_event); |
| break; |
| case NETDEV_UP: |
| case NETDEV_DOWN: |
| case NETDEV_CHANGE: |
| if (!us_ibdev->ufdev->link_up && |
| netif_carrier_ok(netdev)) { |
| usnic_fwd_carrier_up(us_ibdev->ufdev); |
| usnic_info("Link UP on %s\n", |
| dev_name(&us_ibdev->ib_dev.dev)); |
| ib_event.event = IB_EVENT_PORT_ACTIVE; |
| ib_event.device = &us_ibdev->ib_dev; |
| ib_event.element.port_num = 1; |
| ib_dispatch_event(&ib_event); |
| } else if (us_ibdev->ufdev->link_up && |
| !netif_carrier_ok(netdev)) { |
| usnic_fwd_carrier_down(us_ibdev->ufdev); |
| usnic_info("Link DOWN on %s\n", |
| dev_name(&us_ibdev->ib_dev.dev)); |
| usnic_ib_qp_grp_modify_active_to_err(us_ibdev); |
| ib_event.event = IB_EVENT_PORT_ERR; |
| ib_event.device = &us_ibdev->ib_dev; |
| ib_event.element.port_num = 1; |
| ib_dispatch_event(&ib_event); |
| } else { |
| usnic_dbg("Ignoring %s on %s\n", |
| netdev_cmd_to_name(event), |
| dev_name(&us_ibdev->ib_dev.dev)); |
| } |
| break; |
| case NETDEV_CHANGEADDR: |
| if (!memcmp(us_ibdev->ufdev->mac, netdev->dev_addr, |
| sizeof(us_ibdev->ufdev->mac))) { |
| usnic_dbg("Ignoring addr change on %s\n", |
| dev_name(&us_ibdev->ib_dev.dev)); |
| } else { |
| usnic_info(" %s old mac: %pM new mac: %pM\n", |
| dev_name(&us_ibdev->ib_dev.dev), |
| us_ibdev->ufdev->mac, |
| netdev->dev_addr); |
| usnic_fwd_set_mac(us_ibdev->ufdev, netdev->dev_addr); |
| usnic_ib_qp_grp_modify_active_to_err(us_ibdev); |
| ib_event.event = IB_EVENT_GID_CHANGE; |
| ib_event.device = &us_ibdev->ib_dev; |
| ib_event.element.port_num = 1; |
| ib_dispatch_event(&ib_event); |
| } |
| |
| break; |
| case NETDEV_CHANGEMTU: |
| if (us_ibdev->ufdev->mtu != netdev->mtu) { |
| usnic_info("MTU Change on %s old: %u new: %u\n", |
| dev_name(&us_ibdev->ib_dev.dev), |
| us_ibdev->ufdev->mtu, netdev->mtu); |
| usnic_fwd_set_mtu(us_ibdev->ufdev, netdev->mtu); |
| usnic_ib_qp_grp_modify_active_to_err(us_ibdev); |
| } else { |
| usnic_dbg("Ignoring MTU change on %s\n", |
| dev_name(&us_ibdev->ib_dev.dev)); |
| } |
| break; |
| default: |
| usnic_dbg("Ignoring event %s on %s", |
| netdev_cmd_to_name(event), |
| dev_name(&us_ibdev->ib_dev.dev)); |
| } |
| mutex_unlock(&us_ibdev->usdev_lock); |
| } |
| |
| static int usnic_ib_netdevice_event(struct notifier_block *notifier, |
| unsigned long event, void *ptr) |
| { |
| struct usnic_ib_dev *us_ibdev; |
| struct ib_device *ibdev; |
| |
| struct net_device *netdev = netdev_notifier_info_to_dev(ptr); |
| |
| ibdev = ib_device_get_by_netdev(netdev, RDMA_DRIVER_USNIC); |
| if (!ibdev) |
| return NOTIFY_DONE; |
| |
| us_ibdev = container_of(ibdev, struct usnic_ib_dev, ib_dev); |
| usnic_ib_handle_usdev_event(us_ibdev, event); |
| ib_device_put(ibdev); |
| return NOTIFY_DONE; |
| } |
| |
| static struct notifier_block usnic_ib_netdevice_notifier = { |
| .notifier_call = usnic_ib_netdevice_event |
| }; |
| /* End of netdev section */ |
| |
| /* Start of inet section */ |
| static int usnic_ib_handle_inet_event(struct usnic_ib_dev *us_ibdev, |
| unsigned long event, void *ptr) |
| { |
| struct in_ifaddr *ifa = ptr; |
| struct ib_event ib_event; |
| |
| mutex_lock(&us_ibdev->usdev_lock); |
| |
| switch (event) { |
| case NETDEV_DOWN: |
| usnic_info("%s via ip notifiers", |
| netdev_cmd_to_name(event)); |
| usnic_fwd_del_ipaddr(us_ibdev->ufdev); |
| usnic_ib_qp_grp_modify_active_to_err(us_ibdev); |
| ib_event.event = IB_EVENT_GID_CHANGE; |
| ib_event.device = &us_ibdev->ib_dev; |
| ib_event.element.port_num = 1; |
| ib_dispatch_event(&ib_event); |
| break; |
| case NETDEV_UP: |
| usnic_fwd_add_ipaddr(us_ibdev->ufdev, ifa->ifa_address); |
| usnic_info("%s via ip notifiers: ip %pI4", |
| netdev_cmd_to_name(event), |
| &us_ibdev->ufdev->inaddr); |
| ib_event.event = IB_EVENT_GID_CHANGE; |
| ib_event.device = &us_ibdev->ib_dev; |
| ib_event.element.port_num = 1; |
| ib_dispatch_event(&ib_event); |
| break; |
| default: |
| usnic_info("Ignoring event %s on %s", |
| netdev_cmd_to_name(event), |
| dev_name(&us_ibdev->ib_dev.dev)); |
| } |
| mutex_unlock(&us_ibdev->usdev_lock); |
| |
| return NOTIFY_DONE; |
| } |
| |
| static int usnic_ib_inetaddr_event(struct notifier_block *notifier, |
| unsigned long event, void *ptr) |
| { |
| struct usnic_ib_dev *us_ibdev; |
| struct in_ifaddr *ifa = ptr; |
| struct net_device *netdev = ifa->ifa_dev->dev; |
| struct ib_device *ibdev; |
| |
| ibdev = ib_device_get_by_netdev(netdev, RDMA_DRIVER_USNIC); |
| if (!ibdev) |
| return NOTIFY_DONE; |
| |
| us_ibdev = container_of(ibdev, struct usnic_ib_dev, ib_dev); |
| usnic_ib_handle_inet_event(us_ibdev, event, ptr); |
| ib_device_put(ibdev); |
| return NOTIFY_DONE; |
| } |
| static struct notifier_block usnic_ib_inetaddr_notifier = { |
| .notifier_call = usnic_ib_inetaddr_event |
| }; |
| /* End of inet section*/ |
| |
| static int usnic_port_immutable(struct ib_device *ibdev, u8 port_num, |
| struct ib_port_immutable *immutable) |
| { |
| struct ib_port_attr attr; |
| int err; |
| |
| immutable->core_cap_flags = RDMA_CORE_PORT_USNIC; |
| |
| err = ib_query_port(ibdev, port_num, &attr); |
| if (err) |
| return err; |
| |
| immutable->pkey_tbl_len = attr.pkey_tbl_len; |
| immutable->gid_tbl_len = attr.gid_tbl_len; |
| |
| return 0; |
| } |
| |
| static void usnic_get_dev_fw_str(struct ib_device *device, char *str) |
| { |
| struct usnic_ib_dev *us_ibdev = |
| container_of(device, struct usnic_ib_dev, ib_dev); |
| struct ethtool_drvinfo info; |
| |
| mutex_lock(&us_ibdev->usdev_lock); |
| us_ibdev->netdev->ethtool_ops->get_drvinfo(us_ibdev->netdev, &info); |
| mutex_unlock(&us_ibdev->usdev_lock); |
| |
| snprintf(str, IB_FW_VERSION_NAME_MAX, "%s", info.fw_version); |
| } |
| |
| static const struct ib_device_ops usnic_dev_ops = { |
| .owner = THIS_MODULE, |
| .driver_id = RDMA_DRIVER_USNIC, |
| .uverbs_abi_ver = USNIC_UVERBS_ABI_VERSION, |
| |
| .alloc_pd = usnic_ib_alloc_pd, |
| .alloc_ucontext = usnic_ib_alloc_ucontext, |
| .create_cq = usnic_ib_create_cq, |
| .create_qp = usnic_ib_create_qp, |
| .dealloc_pd = usnic_ib_dealloc_pd, |
| .dealloc_ucontext = usnic_ib_dealloc_ucontext, |
| .dereg_mr = usnic_ib_dereg_mr, |
| .destroy_cq = usnic_ib_destroy_cq, |
| .destroy_qp = usnic_ib_destroy_qp, |
| .get_dev_fw_str = usnic_get_dev_fw_str, |
| .get_link_layer = usnic_ib_port_link_layer, |
| .get_port_immutable = usnic_port_immutable, |
| .mmap = usnic_ib_mmap, |
| .modify_qp = usnic_ib_modify_qp, |
| .query_device = usnic_ib_query_device, |
| .query_gid = usnic_ib_query_gid, |
| .query_pkey = usnic_ib_query_pkey, |
| .query_port = usnic_ib_query_port, |
| .query_qp = usnic_ib_query_qp, |
| .reg_user_mr = usnic_ib_reg_mr, |
| INIT_RDMA_OBJ_SIZE(ib_pd, usnic_ib_pd, ibpd), |
| INIT_RDMA_OBJ_SIZE(ib_cq, usnic_ib_cq, ibcq), |
| INIT_RDMA_OBJ_SIZE(ib_ucontext, usnic_ib_ucontext, ibucontext), |
| }; |
| |
| /* Start of PF discovery section */ |
| static void *usnic_ib_device_add(struct pci_dev *dev) |
| { |
| struct usnic_ib_dev *us_ibdev; |
| union ib_gid gid; |
| struct in_device *ind; |
| struct net_device *netdev; |
| int ret; |
| |
| usnic_dbg("\n"); |
| netdev = pci_get_drvdata(dev); |
| |
| us_ibdev = ib_alloc_device(usnic_ib_dev, ib_dev); |
| if (!us_ibdev) { |
| usnic_err("Device %s context alloc failed\n", |
| netdev_name(pci_get_drvdata(dev))); |
| return ERR_PTR(-EFAULT); |
| } |
| |
| us_ibdev->ufdev = usnic_fwd_dev_alloc(dev); |
| if (!us_ibdev->ufdev) { |
| usnic_err("Failed to alloc ufdev for %s\n", pci_name(dev)); |
| goto err_dealloc; |
| } |
| |
| mutex_init(&us_ibdev->usdev_lock); |
| INIT_LIST_HEAD(&us_ibdev->vf_dev_list); |
| INIT_LIST_HEAD(&us_ibdev->ctx_list); |
| |
| us_ibdev->pdev = dev; |
| us_ibdev->netdev = pci_get_drvdata(dev); |
| us_ibdev->ib_dev.node_type = RDMA_NODE_USNIC_UDP; |
| us_ibdev->ib_dev.phys_port_cnt = USNIC_IB_PORT_CNT; |
| us_ibdev->ib_dev.num_comp_vectors = USNIC_IB_NUM_COMP_VECTORS; |
| us_ibdev->ib_dev.dev.parent = &dev->dev; |
| |
| us_ibdev->ib_dev.uverbs_cmd_mask = |
| (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | |
| (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | |
| (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | |
| (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | |
| (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | |
| (1ull << IB_USER_VERBS_CMD_REG_MR) | |
| (1ull << IB_USER_VERBS_CMD_DEREG_MR) | |
| (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | |
| (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | |
| (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | |
| (1ull << IB_USER_VERBS_CMD_CREATE_QP) | |
| (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | |
| (1ull << IB_USER_VERBS_CMD_QUERY_QP) | |
| (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | |
| (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | |
| (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | |
| (1ull << IB_USER_VERBS_CMD_OPEN_QP); |
| |
| ib_set_device_ops(&us_ibdev->ib_dev, &usnic_dev_ops); |
| |
| rdma_set_device_sysfs_group(&us_ibdev->ib_dev, &usnic_attr_group); |
| |
| ret = ib_device_set_netdev(&us_ibdev->ib_dev, us_ibdev->netdev, 1); |
| if (ret) |
| goto err_fwd_dealloc; |
| |
| if (ib_register_device(&us_ibdev->ib_dev, "usnic_%d")) |
| goto err_fwd_dealloc; |
| |
| usnic_fwd_set_mtu(us_ibdev->ufdev, us_ibdev->netdev->mtu); |
| usnic_fwd_set_mac(us_ibdev->ufdev, us_ibdev->netdev->dev_addr); |
| if (netif_carrier_ok(us_ibdev->netdev)) |
| usnic_fwd_carrier_up(us_ibdev->ufdev); |
| |
| rcu_read_lock(); |
| ind = __in_dev_get_rcu(netdev); |
| if (ind) { |
| const struct in_ifaddr *ifa; |
| |
| ifa = rcu_dereference(ind->ifa_list); |
| if (ifa) |
| usnic_fwd_add_ipaddr(us_ibdev->ufdev, ifa->ifa_address); |
| } |
| rcu_read_unlock(); |
| |
| usnic_mac_ip_to_gid(us_ibdev->netdev->perm_addr, |
| us_ibdev->ufdev->inaddr, &gid.raw[0]); |
| memcpy(&us_ibdev->ib_dev.node_guid, &gid.global.interface_id, |
| sizeof(gid.global.interface_id)); |
| kref_init(&us_ibdev->vf_cnt); |
| |
| usnic_info("Added ibdev: %s netdev: %s with mac %pM Link: %u MTU: %u\n", |
| dev_name(&us_ibdev->ib_dev.dev), |
| netdev_name(us_ibdev->netdev), us_ibdev->ufdev->mac, |
| us_ibdev->ufdev->link_up, us_ibdev->ufdev->mtu); |
| return us_ibdev; |
| |
| err_fwd_dealloc: |
| usnic_fwd_dev_free(us_ibdev->ufdev); |
| err_dealloc: |
| usnic_err("failed -- deallocing device\n"); |
| ib_dealloc_device(&us_ibdev->ib_dev); |
| return NULL; |
| } |
| |
| static void usnic_ib_device_remove(struct usnic_ib_dev *us_ibdev) |
| { |
| usnic_info("Unregistering %s\n", dev_name(&us_ibdev->ib_dev.dev)); |
| usnic_ib_sysfs_unregister_usdev(us_ibdev); |
| usnic_fwd_dev_free(us_ibdev->ufdev); |
| ib_unregister_device(&us_ibdev->ib_dev); |
| ib_dealloc_device(&us_ibdev->ib_dev); |
| } |
| |
| static void usnic_ib_undiscover_pf(struct kref *kref) |
| { |
| struct usnic_ib_dev *us_ibdev, *tmp; |
| struct pci_dev *dev; |
| bool found = false; |
| |
| dev = container_of(kref, struct usnic_ib_dev, vf_cnt)->pdev; |
| mutex_lock(&usnic_ib_ibdev_list_lock); |
| list_for_each_entry_safe(us_ibdev, tmp, |
| &usnic_ib_ibdev_list, ib_dev_link) { |
| if (us_ibdev->pdev == dev) { |
| list_del(&us_ibdev->ib_dev_link); |
| found = true; |
| break; |
| } |
| } |
| |
| |
| mutex_unlock(&usnic_ib_ibdev_list_lock); |
| if (found) |
| usnic_ib_device_remove(us_ibdev); |
| else |
| WARN(1, "Failed to remove PF %s\n", pci_name(dev)); |
| } |
| |
| static struct usnic_ib_dev *usnic_ib_discover_pf(struct usnic_vnic *vnic) |
| { |
| struct usnic_ib_dev *us_ibdev; |
| struct pci_dev *parent_pci, *vf_pci; |
| int err; |
| |
| vf_pci = usnic_vnic_get_pdev(vnic); |
| parent_pci = pci_physfn(vf_pci); |
| |
| BUG_ON(!parent_pci); |
| |
| mutex_lock(&usnic_ib_ibdev_list_lock); |
| list_for_each_entry(us_ibdev, &usnic_ib_ibdev_list, ib_dev_link) { |
| if (us_ibdev->pdev == parent_pci) { |
| kref_get(&us_ibdev->vf_cnt); |
| goto out; |
| } |
| } |
| |
| us_ibdev = usnic_ib_device_add(parent_pci); |
| if (IS_ERR_OR_NULL(us_ibdev)) { |
| us_ibdev = us_ibdev ? us_ibdev : ERR_PTR(-EFAULT); |
| goto out; |
| } |
| |
| err = usnic_ib_sysfs_register_usdev(us_ibdev); |
| if (err) { |
| usnic_ib_device_remove(us_ibdev); |
| us_ibdev = ERR_PTR(err); |
| goto out; |
| } |
| |
| list_add(&us_ibdev->ib_dev_link, &usnic_ib_ibdev_list); |
| out: |
| mutex_unlock(&usnic_ib_ibdev_list_lock); |
| return us_ibdev; |
| } |
| /* End of PF discovery section */ |
| |
| /* Start of PCI section */ |
| |
| static const struct pci_device_id usnic_ib_pci_ids[] = { |
| {PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_VIC_USPACE_NIC)}, |
| {0,} |
| }; |
| |
| static int usnic_ib_pci_probe(struct pci_dev *pdev, |
| const struct pci_device_id *id) |
| { |
| int err; |
| struct usnic_ib_dev *pf; |
| struct usnic_ib_vf *vf; |
| enum usnic_vnic_res_type res_type; |
| |
| vf = kzalloc(sizeof(*vf), GFP_KERNEL); |
| if (!vf) |
| return -ENOMEM; |
| |
| err = pci_enable_device(pdev); |
| if (err) { |
| usnic_err("Failed to enable %s with err %d\n", |
| pci_name(pdev), err); |
| goto out_clean_vf; |
| } |
| |
| err = pci_request_regions(pdev, DRV_NAME); |
| if (err) { |
| usnic_err("Failed to request region for %s with err %d\n", |
| pci_name(pdev), err); |
| goto out_disable_device; |
| } |
| |
| pci_set_master(pdev); |
| pci_set_drvdata(pdev, vf); |
| |
| vf->vnic = usnic_vnic_alloc(pdev); |
| if (IS_ERR_OR_NULL(vf->vnic)) { |
| err = vf->vnic ? PTR_ERR(vf->vnic) : -ENOMEM; |
| usnic_err("Failed to alloc vnic for %s with err %d\n", |
| pci_name(pdev), err); |
| goto out_release_regions; |
| } |
| |
| pf = usnic_ib_discover_pf(vf->vnic); |
| if (IS_ERR_OR_NULL(pf)) { |
| usnic_err("Failed to discover pf of vnic %s with err%ld\n", |
| pci_name(pdev), PTR_ERR(pf)); |
| err = pf ? PTR_ERR(pf) : -EFAULT; |
| goto out_clean_vnic; |
| } |
| |
| vf->pf = pf; |
| spin_lock_init(&vf->lock); |
| mutex_lock(&pf->usdev_lock); |
| list_add_tail(&vf->link, &pf->vf_dev_list); |
| /* |
| * Save max settings (will be same for each VF, easier to re-write than |
| * to say "if (!set) { set_values(); set=1; } |
| */ |
| for (res_type = USNIC_VNIC_RES_TYPE_EOL+1; |
| res_type < USNIC_VNIC_RES_TYPE_MAX; |
| res_type++) { |
| pf->vf_res_cnt[res_type] = usnic_vnic_res_cnt(vf->vnic, |
| res_type); |
| } |
| |
| mutex_unlock(&pf->usdev_lock); |
| |
| usnic_info("Registering usnic VF %s into PF %s\n", pci_name(pdev), |
| dev_name(&pf->ib_dev.dev)); |
| usnic_ib_log_vf(vf); |
| return 0; |
| |
| out_clean_vnic: |
| usnic_vnic_free(vf->vnic); |
| out_release_regions: |
| pci_set_drvdata(pdev, NULL); |
| pci_clear_master(pdev); |
| pci_release_regions(pdev); |
| out_disable_device: |
| pci_disable_device(pdev); |
| out_clean_vf: |
| kfree(vf); |
| return err; |
| } |
| |
| static void usnic_ib_pci_remove(struct pci_dev *pdev) |
| { |
| struct usnic_ib_vf *vf = pci_get_drvdata(pdev); |
| struct usnic_ib_dev *pf = vf->pf; |
| |
| mutex_lock(&pf->usdev_lock); |
| list_del(&vf->link); |
| mutex_unlock(&pf->usdev_lock); |
| |
| kref_put(&pf->vf_cnt, usnic_ib_undiscover_pf); |
| usnic_vnic_free(vf->vnic); |
| pci_set_drvdata(pdev, NULL); |
| pci_clear_master(pdev); |
| pci_release_regions(pdev); |
| pci_disable_device(pdev); |
| kfree(vf); |
| |
| usnic_info("Removed VF %s\n", pci_name(pdev)); |
| } |
| |
| /* PCI driver entry points */ |
| static struct pci_driver usnic_ib_pci_driver = { |
| .name = DRV_NAME, |
| .id_table = usnic_ib_pci_ids, |
| .probe = usnic_ib_pci_probe, |
| .remove = usnic_ib_pci_remove, |
| }; |
| /* End of PCI section */ |
| |
| /* Start of module section */ |
| static int __init usnic_ib_init(void) |
| { |
| int err; |
| |
| printk_once(KERN_INFO "%s", usnic_version); |
| |
| err = usnic_uiom_init(DRV_NAME); |
| if (err) { |
| usnic_err("Unable to initialize umem with err %d\n", err); |
| return err; |
| } |
| |
| err = pci_register_driver(&usnic_ib_pci_driver); |
| if (err) { |
| usnic_err("Unable to register with PCI\n"); |
| goto out_umem_fini; |
| } |
| |
| err = register_netdevice_notifier(&usnic_ib_netdevice_notifier); |
| if (err) { |
| usnic_err("Failed to register netdev notifier\n"); |
| goto out_pci_unreg; |
| } |
| |
| err = register_inetaddr_notifier(&usnic_ib_inetaddr_notifier); |
| if (err) { |
| usnic_err("Failed to register inet addr notifier\n"); |
| goto out_unreg_netdev_notifier; |
| } |
| |
| err = usnic_transport_init(); |
| if (err) { |
| usnic_err("Failed to initialize transport\n"); |
| goto out_unreg_inetaddr_notifier; |
| } |
| |
| usnic_debugfs_init(); |
| |
| return 0; |
| |
| out_unreg_inetaddr_notifier: |
| unregister_inetaddr_notifier(&usnic_ib_inetaddr_notifier); |
| out_unreg_netdev_notifier: |
| unregister_netdevice_notifier(&usnic_ib_netdevice_notifier); |
| out_pci_unreg: |
| pci_unregister_driver(&usnic_ib_pci_driver); |
| out_umem_fini: |
| |
| return err; |
| } |
| |
| static void __exit usnic_ib_destroy(void) |
| { |
| usnic_dbg("\n"); |
| usnic_debugfs_exit(); |
| usnic_transport_fini(); |
| unregister_inetaddr_notifier(&usnic_ib_inetaddr_notifier); |
| unregister_netdevice_notifier(&usnic_ib_netdevice_notifier); |
| pci_unregister_driver(&usnic_ib_pci_driver); |
| } |
| |
| MODULE_DESCRIPTION("Cisco VIC (usNIC) Verbs Driver"); |
| MODULE_AUTHOR("Upinder Malhi <umalhi@cisco.com>"); |
| MODULE_LICENSE("Dual BSD/GPL"); |
| module_param(usnic_log_lvl, uint, S_IRUGO | S_IWUSR); |
| module_param(usnic_ib_share_vf, uint, S_IRUGO | S_IWUSR); |
| MODULE_PARM_DESC(usnic_log_lvl, " Off=0, Err=1, Info=2, Debug=3"); |
| MODULE_PARM_DESC(usnic_ib_share_vf, "Off=0, On=1 VF sharing amongst QPs"); |
| MODULE_DEVICE_TABLE(pci, usnic_ib_pci_ids); |
| |
| module_init(usnic_ib_init); |
| module_exit(usnic_ib_destroy); |
| /* End of module section */ |